JP2003328246A - High-density woven fabric of high tenacity polyester multifilament yarn - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high-density woven fabric of polyester multifilament yarn, prevented from being easily torn even when used in practicing sports, having excellent fashionableness and aestheticism, having fully color-developing properties and clarity therein, and further having a soft feeling. <P>SOLUTION: This high-density woven fabric of the polyester multifilament yarn has a total cover factor of the warp and the weft of ≥1500, wherein a high tenacity synthetic fiber having a tensile strength of ≥15 cN/dtex is used as the warp and/or the weft for composing the woven fabric, so that at least one or more fibers are aligned per 10 cm in width of the high-density woven fabric. The polyester multifilament yarn is preferably composed of a modified polyester in which a dicarboxylic acid component having a metal sulfonate group is copolymerized in an amount of ≥40 wt.%. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a high-density woven fabric composed of polyester multifilaments. More specifically, the present invention relates to a soft high-density woven fabric that can be widely used as a material for sports clothing, yet has high strength and excellent color development.

[0002]

2. Description of the Related Art Conventionally, high density woven fabrics using synthetic fibers such as polyester and nylon multifilaments have been manufactured and commercialized and are widely used by consumers. The high-density woven fabric uses multifilaments having a relatively small single yarn fineness, and has a coefficient called a cover factor of 2000 indicating the degree of clearance between the unit densities of the warp and weft of the woven fabric.
Can be obtained by weaving to a high density of 3 to 3000 class, and the high density woven fabric has excellent moisture permeability, water pressure resistance,
It has a strong tearing power, yet has a soft and flexible texture, and its application in the field of sports clothing is particularly remarkable. However, although polyester and nylon multifilament high density fabrics for sports clothing generally have a tear strength of about 10 N or more, they easily pierce sharp objects and metal pieces,
To tear. For example, in outdoor sports such as baseball and soccer, spikes may occur in skiing, and in skiing, the base fabric may be torn due to contact with the stock, skis, or the edge of the board, which may be dangerous to the human body. . In addition, it is necessary to consider fashionability and aesthetics for sportswear, and it is necessary to have vivid clothing that is rich in coloring, but dicarboxylic acid having a metal sulfonic acid group to impart coloring property. Polyester multifilament high density fabric using modified polyester multifilament in which components are copolymerized has a problem that the strength of the multifilament itself becomes low and the tear strength of the fabric becomes low, which is a problem to wear. Is the current situation.

A technique of using high-strength fibers for the warp or weft of a woven fabric for the purpose of improving the tear strength of the woven fabric is disclosed in Japanese Unexamined Patent Publication No. 2000-234236 and Japanese Patent Publication No. 11-503.
Although disclosed in Japanese Patent No. 796 and the like, all of them are woven fabric contents using short fibers, and it is difficult to apply the technical invention of the above-mentioned patent number to thin fabrics. Therefore, in the present situation, many problems remain in the polyester multifilament high density woven fabric, especially the thin cloth high density woven fabric, which has both high tenacity and color developability.

[0004]

SUMMARY OF THE INVENTION The object of the present invention is not torn easily even during sports competitions, has a rich color development, has a clear color tone, and has a high strength with a soft texture. To obtain a polyester multifilament high density fabric.

[0005]

That is, the present invention has the following constitution. 1. In a polyester multifilament high density fabric having a total cover factor of 1500 or more of warp and weft constituting a woven fabric, a high-strength synthetic fiber having a tensile strength of 15 cN / dtex or more in the warp and / or the weft is used. A high-strength polyester multifilament high-density woven fabric having a width of at least 1 per 10 cm. The cover factor is represented by the product of the square root of the multifilament fineness (decitex) and the fabric density (books / in). 2. The sum of the cover factors of the warp and the weft constituting the high-density fabric is 1500 to 4000, and the total fineness of the warp and the weft made of polyester multifilament mainly constituting the fabric is 40 to 340 decitex and the single yarn fineness is 1 decitex or less. The high-strength polyester multifilament high-density woven fabric according to the first aspect, characterized in that 3. The high-strength polyester multifilament high-density fabric according to the above 1 or 2, wherein the high-strength synthetic fiber is covered with a polyester multifilament, and the coverage is 70% or more. 4. The high tenacity polyester multifilament high density woven fabric according to any one of the above 1 to 3, wherein the high density woven fabric has a basis weight of 150 g / m 2 or less. 5. 40% by weight or more of the polyester multifilament is a modified polyester obtained by copolymerizing a dicarboxylic acid component having a metal sulfonic acid group. Density fabric.

The present invention will be described in detail below. The high-density fabric composed of the polyester multifilament of the present invention has a warp and / or weft with a tensile strength of 15 cN / dtex.
It is necessary to arrange at least one synthetic fiber having the above per 10 cm width of the high-density fabric.
Synthetic fibers having a tensile strength of 15 cN / dtex or more are classified as, for example, a rigid polymer, and are a type of para-aramid such as "Kevlar" (hereinafter "" is a registered trademark), "Technola", and poly- p-phenylene benzbis oxazole (PBO) fiber, "Vectran" which is a kind of wholly aromatic polyester, is classified into a flexible polymer,
Examples thereof include polyethylene, which is a type of "Dyneema", "Techmilon", and inorganic fibers, and types of PAN-based carbon fibers, which are "Torayca" and "Vesphite".
In particular, the PBO fiber “Zylon” manufactured by Toyobo Co., Ltd., which is said to have the highest tensile strength, is preferable.

However, such very strong fibers are arranged in the warp and / or weft of the high-density fabric composed of polyester multifilaments at least one or more per 10 cm width of the high-density fabric, that is, 30 polyester multifilaments. By arranging one strong fiber for every 600 to 600 fibers, the tear strength of the high-density fabric can be significantly improved. Specific examples include spikes in baseball and soccer shoes, sharps such as ski stocks, and conventional high-density fabrics that are torn or punctured at the edges such as skis and boards. Although there was a risk that the part would reach the body, the tensile strength of the high-density fabric is 1 in the product of the present invention.
Synthetic fibers with 5 cN / dtex or more can prevent further intrusion of sharps and edges, and can minimize harm to the body. Further, as will be described later, in a high-density woven fabric using a modified polyester obtained by copolymerizing a dicarboxylic acid component having a metal sulfonic acid group, the tearing force becomes weak,
By arranging the high-strength synthetic fibers, it becomes possible to improve the tearing force, and it is possible to obtain a high-density woven fabric having both high strength and color developability. However, with synthetic fibers having a tensile strength of less than 15 cN / dtex, it is not possible to minimize the damage to external force as described above, and it is not possible to obtain a high-density woven fabric having high strength. It is more preferably 20 cN / dtex, and even more preferably 30 cN / dtex.

Similarly, if the synthetic fibers in the high-density woven fabric exceed the width of 10 cm of the woven fabric, the role of the high-strength synthetic fibers cannot be sufficiently fulfilled, which is not preferable. It is preferable that high-strength synthetic fibers are preferably arranged in the warp and weft of the high-density woven fabric, and the intervals are at least 1 in 1 in, that is, the lattice is preferably at least 1 in vertical and 1 in horizontal. Conversely, if the number of high-strength synthetic fibers is too large, the high-density fabric itself becomes hard, which is not preferable for wearing as sportswear. Preferably, it is desirable that the number of grids is about 5 mm in the vertical and horizontal directions.

It is desirable that the synthetic fiber having a tensile strength of 15 cN / dtex or more is coated with a polyester multifilament, and the coverage thereof is 70% or more. As a means therefor, which is a known technique, the yarns are aligned and twisted together, the covering yarn is used as a core yarn and the other yarns are wound around the core yarn in a spiral shape, and a mixed fiber using a fluid entanglement device. Alternatively, a method of using a Taslan textured yarn may be used.
Further, as the polyester multifilament, false twisted yarn excellent in bulkiness is most suitable. The false twisted yarn apparently has thick fibers and can effectively cover synthetic fibers. The reason for coating is tensile strength of 15 cN / dte
Since synthetic fibers of x or more often have poor dyeability,
It has a colorful image such as ski wear, and it is not preferable in terms of aesthetics for products that require color development and sharpness. Further, since many of them have poor light resistance and are deteriorated by ultraviolet rays, it is desirable to cover them with a polyester multifilament so that synthetic fibers do not appear on the surface of the high-density fabric and are not exposed.

However, the coverage is preferably 70% or more, more preferably 80% or more. As the polyester multifilament to be used, one having a relatively small single yarn fineness and a large number of filaments is preferable. The single yarn fineness is 1.5 decitex or less, and the number of filaments is 70.
One or more polyester multifilaments are effective. The fineness of the coated synthetic fiber is preferably at the same level as the fineness of the polyester multifilament that mainly constitutes the woven fabric, and the fineness of the synthetic fiber can be 3 times or less the fineness of the polyester multifilament that mainly constitutes the woven fabric even if it is thick. preferable. The coverage is taken by taking a cross-sectional photograph of the covered synthetic fiber, and examining the filaments located in the outermost layer in the cross-sectional photograph, and the number of polyester multifilaments (B): Nb and its single yarn fineness: Db, synthetic fiber ( As for the number of A): Na and its single yarn fineness: Da, the formula: Nb × Db / (Nb × Db + Na ×
Substituting for Nb), the coverage was obtained as a percentage.

A high density woven fabric composed of polyester multifilaments requires a total cover factor of 1500 for warp and weft yarns, preferably 1500 or more, 4 or more.
It is desirable that the total fineness of the warp and the weft made of polyester multifilament mainly constituting the woven fabric is 40 decitex to 340 decitex and the single yarn fineness is 1 decitex or less. The cover factor is a coefficient that expresses the degree of clearance between unit densities and is represented by the product of the square root of the fineness of the multifilament and the fabric density. A high cover factor value indicates that the gap is small, that is, the denseness is high. . In order to obtain excellent waterproofness, the water pressure resistance needs to be 80 kPa, more preferably 100 kPa, and the cover factor needs to be 1500 or more to satisfy these requirements. However, when it exceeds 4000, the texture becomes hard and the woven fabric becomes heavy, which is not preferable. In addition, relatively fine filaments are preferred in order to increase the fineness of the total fineness and to soften the texture. 40 decitex or more, 3
40 decitex or less is required, and more preferably 50 decitex or more and 170 decitex or less. The single yarn fineness is also 1 decitex or less, and more preferably 0.7 decitex or less, in order to increase the denseness. The number of filaments is not specifically mentioned,
It is preferably at least 70 or more, more preferably 10
It is 0 or more.

The basis weight of the high tenacity polyester multifilament high density fabric of the present invention is preferably 150 g / m ² or less. For sportswear, lighter weight is required, and on the other hand, if it is heavy, it hinders sports movements, making it difficult to play quickly and agilely. Therefore, the basis weight is 150 g /
m ² or less is desirable, and preferably 140 g / m ² or less.

The warp yarns constituting the high-density woven fabric of the present invention are preferably untwisted or subjected to a sweet twist having a twist coefficient of 5000 or less. High-density fabrics are usually pressed at a dyeing factory in a calendering process to flatten the fibers to reduce the gaps between the tissues. Therefore, the higher the twist number of the warp yarns, the more the fiber converging property is increased, and the fibers are less likely to be flattened in the calendering process. Therefore, the twist number is preferably low, and the more preferable range is no twist or twist factor of 40.
It is 00 or less. The number of twists of the weft yarn is not particularly mentioned, but as described above, the untwisted yarn or the sweet twisted yarn having a twist coefficient of 5000 or less is preferable. And when applying sweet twist, use a general twisting machine such as an Italian twisting machine classified as an up twister, a large up twister, a ring twisting machine classified as a down twister, a plying machine, or a double twister. A double twister that is prepared by weaving, is particularly versatile and easy to handle, and a double twister that is excellent in productivity is preferably used. When weaving without twisting, it is preferable that the polyester multifilament is mixed and entangled, and the degree of mixed entanglement is 20 pieces / M or more, 1
00 pieces / M or less is preferable, and 40 pieces / M is more preferable.
As described above, the number is 80 / M or less, and within this range, there is no problem in the process passability in the twisting and weaving processes. However, if it exceeds 100 M / M, it is not preferable because it causes a texture hardening and an unfavorable uneven appearance. As the mixed fiber entanglement means, an air entanglement nozzle is preferable, and an interlacer nozzle or a Taslan nozzle is preferable.

The structure of the polyester multifilament high density woven fabric on which the strong synthetic fiber of the present invention is arranged is not particularly limited, and may be any of a flat structure, a twill structure, a satin structure, a satin texture, a double structure, a rip stop and the like. . In order to increase the water pressure resistance of the woven fabric and make it strong, the flat tissue having the largest number of texture points is preferable, and the ripstop texture in which the stone texture, the nanaco texture and the flat texture are combined is also preferably used.

The polyester multifilament high density fabric of the present invention can be woven by any one selected from a rapier loom, an air jet loom, a water jet loom, a fly loom and a gripper loom. When a synthetic fiber is used also for the weft, a loom having a multicolor free exchange device, a loom having a dobby device capable of coping with the changing texture, and the like can be more preferably used.
The processing of greige can be finished by subjecting it to ordinary scouring and dyeing, and if necessary, resin can be laminated and coated on the high-density fabric.

As the polyester used in the present invention, a polyester whose main component is polyethylene terephthalate can be mentioned, which can be obtained by polymerizing by a generally known method, but within a range not impairing the object of the present invention. The other third component may be copolymerized with. Specifically, dicarboxylic acids such as adipic acid, oxalic acid, sebacic acid, isophthalic acid, 5-sodium sulfoisophthalic acid, glycols such as diethylene glycol and polyethylene glycol, bisphenol A or its ethylene oxide adduct, and hydroxybenzoic acid. These oxycarboxylic acids and the like can be used alone or in combination of two or more kinds. In particular, it is desirable to copolymerize a dicarboxylic acid component having a metal sulfonic acid group.
Modified polyester multifilaments copolymerized with sodium sulfoisophthalic acid are preferred. When all (100% by weight) of the polyester multifilament mainly composing the woven fabric is a polyester multifilament in which 5-sodium sulfoisophthalic acid is copolymerized, excellent coloring properties and vivid colors can be obtained, and 40% by weight is obtained.
If it is in the range of from 60 to 60% by weight, a high density woven fabric having a melange tone, a different color effect and an iridescent tone can be obtained by dyeing the polyester multifilament dyed with a disperse dye separately. Further, additives such as a matting agent, an antioxidant, a fluorescent whitening agent, an ultraviolet absorber, an antistatic agent, a flame retardant and the like may be added within a range not impairing the object of the present invention.

The cross-sectional shape of the polyester multifilament used in the present invention may be any shape such as a circle, a triangle, a polygon such as a quadrangle, a flat shape, a hollow, a star, and a gear shape, and is not limited to the present invention. Further, as the polyester multifilament, a melt-spun product drawn by a drawing machine may be used, a spun product drawn directly by a spin draw method, a false twisted yarn false-twisted by a false twisting machine, a mixed It is also possible to use a polyester multifilament that has undergone yarn processing, such as a heterogeneous-shrink mixed yarn obtained by mixing multifilaments having different shrinkages with a fiber machine, or a Taslan textured yarn.
The dry heat shrinkage of the polyester multifilament is 40% or less, more preferably 20% or less if it is intended for clothing, and usually 15% or less of the polyester multifilament is used.

[0018]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples. The tear strength used in the present invention was measured by the following method. [Tear strength] Measurement was performed according to JIS-L1096 method using the pendulum method.
The average value of the times was used as the measured value.

(Example 1) Using polyethylene terephthalate semi-dal resin, an undrawn yarn obtained by melt spinning was drawn by a drawing machine to obtain a drawn yarn having a 78 decitex 216 filament round cross section. The drawn yarn was subjected to false twisting to obtain a false twisted yarn. Then, for the warp, the false twisted yarn was twisted in the Z twist direction at a twist number of 230 T / M using a 309 type double twister manufactured by Murata Machinery Co., Ltd. On the other hand, the high tenacity synthetic fiber has a tear strength of 36 cN / dtex.
The core yarn is made of "Zylon" manufactured by Toyobo Co., Ltd. of 55 decitex having a twist of 80 D / 800 T / M in the Z twist direction using the false twist textured yarn of 78 decitex 216 filament as a sheath yarn. I went. The coverage was 88%. Next, the false-twisted 78 decitex 216 filaments and the covered high-strength synthetic fibers were processed by a single sizing machine YS-6 manufactured by Yamada Co., Ltd. at a speed of 200 M / min, a drying temperature of 70 ° C. and a sizing liquid temperature. Adhesion was carried out at 40 ° C. and the amount of each adhesion was set to 5.5% by weight. In addition, the paste is an acrylic acid ester copolymer ammonium salt type plus size J-60 manufactured by Kyodo Chemical Co., Ltd.
And Goshenol GL-05 as a polyvinyl alcohol paste manufactured by Nippon Synthetic Chemical Industry Co., Ltd., and a mixed paste having a concentration of 8% and a viscosity of 5 mPas adjusted to a mixing ratio of 6: 4 was used. In addition, as a smoothing agent, a softening agent, and a penetrating agent for the mixed paste, Cytex K-38 manufactured by Kyowa Chemical Industry Co., Ltd.
0 (25% active ingredient), Cytex T-190 (3
5%) and Cytex 24 (40% of the same) are added, and AS-2 manufactured by Dainippon Ink and Chemicals, Inc. is used as an antistatic agent.
0 (35%), 2%, 2%, 0.2%,
0.2% was added. Next, each of the obtained sized yarns is
Warping was carried out using a NAS SUPER-130W type manufactured by Suzuki Warper with a reed width of 130 cm and a warp count of 9608. In addition, the 78 decitex 216 filaments that were false-twisted and the covered high-strength synthetic fibers were arranged one for each 54 warps. After insertion, Co., Ltd.
After setting a beam on a rapier loom 2001S type manufactured by Ishikawa Seisakusho, a non-twisted yarn of 78 decitex 216 filaments which had been false twisted as a weft yarn and a high-strength synthetic fiber as a weft yarn were struck at 40: 1 and woven in a flat pattern. The weavability was very good, and warp breakage due to fluff generation was not a problem. And the quality of the obtained greige is high, and the density of greige is (195 / in, 130 / i
n), and a high density woven fabric having a lattice pattern of about 7 mm in length and width was obtained. The greige cloth was passed through usual relaxing scouring, dyeing and finishing steps to obtain a dyed and processed cloth. The cover factor of the dyed cloth is 2985 and the basis weight is 111 g.
/ M ² . The tear strength of the dyed cloth was 3.2 kgf in the warp direction and 1.5 kgf in the weft direction, and it was not easily torn to sports equipment requiring a sharp edge or a sharp portion, and was excellent in durability. It was a polyester multifilament high density fabric.

(Comparative Example 1) In Example 1, only the false twist textured yarn having a 78 decitex 216 filament round cross section, which was twisted in the Z twist direction at a twist number of 230 T / M, was used as the warp and weft of the woven fabric, and Density woven fabric with tensile strength of 2
No high-strength synthetic fibers with 0 cN / dtex or more were used. Thereafter, in exactly the same manner as in Example 1, the greige was subjected to a relaxing scouring, dyeing and finishing process to obtain a dyed and processed cloth. The dyed cloth is a polyester multi-filament high density fabric suitable for sports use and has a high water pressure resistance, but the tear strength is low as compared with Example 1, and a sport having a sharp edge or a sharp portion is used. It was a polyester multifilament high density fabric that was easily torn and torn against tools.

(Example 2) In Example 1, a drawn yarn having a 90 decitex 216 filament round cross section obtained by copolymerizing 5-sodium sulfoisophthalic acid obtained by melt spinning was used. A 309 type double twister manufactured by Kikai Co., Ltd. was used to perform twisting in the S twisting direction at a twist number of 250 T / M. On the other hand, for the high-strength synthetic fiber, the same "Zylon" as in Example 1 was used as the core yarn, and the drawn yarn of 90 decitex 216 filaments was used as the sheath yarn and covered at 800 T / m for the warp. I was there. The coverage was 85%. Warp preparation was performed in the same manner as in Example 1 for sizing and warping,
After being set on a loom, the weft yarn was drawn with the 90-decitex 216 filament stretched yarn and the covered high-strength synthetic fiber, and the weft yarn was inserted at a ratio of 40: 1 and weaved in a flat weave. The greige density was (195 / in, 121 / in), and a high-density woven fabric having a lattice pattern of about 7 mm in length and width was obtained. The greige cloth was passed through usual relaxing scouring, dyeing and finishing steps to obtain a dyed and processed cloth. The tear strength of the dyed fabric is 3.3 kgf in the warp direction and 1.4 kg in the weft direction.
f was a polyester multifilament high density woven fabric excellent in fashionable color development without being easily torn to sports equipment that requires a sharp edge or a sharp portion. The results are shown in Table 1.

[0022]

[Table 1]

[0023]

EFFECTS OF THE INVENTION According to the present invention, even with a high-density woven fabric composed of a modified polyester obtained by copolymerizing a dicarboxylic acid component having a metal sulfonic acid group, by arranging high-strength synthetic fibers, high tear strength can be obtained. It is possible to make a polyester multi-filament high-density woven fabric that retains the above-mentioned properties and has excellent color development and sharpness, and not only has a soft texture, but also to the body against natural accidents during sports competition. It has become possible to minimize the harm of.

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 4L036 MA04 MA05 MA33 MA39 MA40                       PA05 PA21 PA33 PA46 RA04                       RA24 UA07                 4L048 AA19 AA21 AA48 AB07 AB17                       AB19 AB21 AC09 BA01 BA02                       CA01 CA15 DA03

Claims (5)

[Claims] 1. A polyester multi-filament high density woven fabric having a total cover factor of 1500 or more of warp and weft constituting a woven fabric, wherein a high-strength synthetic fiber having a tensile strength of 15 cN / dtex or more is used for the warp and / or the weft. A high-strength polyester multifilament high-density woven fabric, characterized in that at least one width of the high-density woven fabric is arranged every 10 cm. 2. A warp and a weft constituting a high-density woven fabric have a total cover factor of 1500 to 4000, and a warp and a weft composed mainly of polyester multifilaments have a total fineness of 40 to 340 decitex and a single yarn. The high-strength polyester multifilament high-density fabric according to claim 1, characterized in that the fineness is 1 decitex or less. 3. The high-strength polyester multifilament high-density fabric according to claim 1 or 2, wherein the high-strength synthetic fiber is covered with a polyester multifilament, and the coverage is 70% or more. 4. The high tenacity polyester multifilament high density woven fabric according to claim 1, wherein the high density woven fabric has a basis weight of 150 g / m 2 or less. 5. The high polyester according to claim 1, wherein 40% by weight or more of the polyester multifilament is a modified polyester obtained by copolymerizing a dicarboxylic acid component having a metal sulfonic acid group. Strong polyester multi-filament high density fabric.